Bionic eyes were always a sci-fi mainstay and now they are also a reality, restoring vision to blind or partially-sighted people. But what is it actually like to see with an artificial eye? Researchers at the University of Oxford have brought along a simulation that shows visitors what the world looks like to someone with a retinal implant, along with other new technology demonstrating the latest research in artificial vision.

The auroras are one of the most impressive light shows on Earth, but viewing them normally requires a trip to the poles. Now, researchers working with the European Space Agency have brought the show to London, replicating the electromagnetic conditions in the upper atmosphere that naturally produce the auroras. They are also showing off their Cluster spacecraft, which monitor the Earth's magnetosphere from space.

We've all got to reduce our energy usage if we want to fight off climate change, but what about making better use of resources in the first place? Scientists at the National Physical Laboratory are working to harvest energy that is normally lost as heat or other forms of waste, and they've brought along their technology for an energy race. Visitors to the exhibition can attempt to generate energy by rubbing against thermoelectric plates, banging on piezoelectric rods, or simply pedalling as fast as they can on a bike-powered generator. Whoever generates the most power wins the race - and gets a certificate to prove it.

It's been called the Big Bang Machine and the end of the world as we know it, but what about the actual science behind the Large Hadron Collider (LHC)? Researchers at the Universities of Birmingham and Cambridge are on hand to demonstrate how physicists use spark chambers and cloud chambers to hunt for elusive particles. They also have a replica section from the LHC on display, if you've ever wanted to poke your fingers in a particle accelerator.

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